Will the gameplay on my map be okay?

Hello, I'm going to be making my first Gravel Pit style map where you capture A and B to unlock C. I have made a very quick birds eye view drawn in paint ( ) of what it will look like but I'm not sure whether it will be well balanced or fun to play in.

P.S. Control Point B is set inside
P.P.S. It's a snow level if you hadn't noticed.
P.P.P.S THE GAME